Two fish tales to tell today:
First: David Reznick of UC Riverside and colleagues found that female guppies go through menopause, just like humans (and gorillas, as blogged here before)!
Second: Molly Morris of Ohio University found that young female swordtail fish prefer males with symmetrical patterns, an indicator of good genes - however, their mating preference changes as they age - older females prefer males with asymmetric markings.
Fish menopause story | Fish mating preference story
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